diff options
Diffstat (limited to 'usr.bin/vi/exf.h')
| -rw-r--r-- | usr.bin/vi/exf.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/usr.bin/vi/exf.h b/usr.bin/vi/exf.h new file mode 100644 index 000000000000..5049f3ea2418 --- /dev/null +++ b/usr.bin/vi/exf.h @@ -0,0 +1,129 @@ +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)exf.h 8.20 (Berkeley) 12/28/93 + */ + /* Undo direction. */ +/* + * exf -- + * The file structure. + */ +struct _exf { + int refcnt; /* Reference count. */ + + /* Underlying database state. */ + DB *db; /* File db structure. */ + char *c_lp; /* Cached line. */ + size_t c_len; /* Cached line length. */ + recno_t c_lno; /* Cached line number. */ + recno_t c_nlines; /* Cached lines in the file. */ + + DB *log; /* Log db structure. */ + char *l_lp; /* Log buffer. */ + size_t l_len; /* Log buffer length. */ + recno_t l_high; /* Log last + 1 record number. */ + recno_t l_cur; /* Log current record number. */ + MARK l_cursor; /* Log cursor position. */ + enum direction lundo; /* Last undo direction. */ + + LIST_HEAD(_markh, _mark) marks; /* Linked list of file MARK's. */ + + /* + * Paths for the recovery mail file and the vi recovery file and + * a file descriptor for the former. We keep a file descriptor + * to the recovery file open and locked, while the file is in use. + * This allows the recovery option to distinguish between files + * that are live, and those that should be recovered. + * + * F_RCV_ON is set as long as we believe that the file is recoverable. + * This doesn't mean that any initialization has been done, however. + * If F_RCV_NORM is not set and rcv_path and rcv_mpath are not NULL, + * they are unlinked on file exit. If not NULL they are free'd on file + * exit. On file exit, if rcv_fd is not -1, it is closed. + */ +#define RCV_PERIOD 120 /* Sync every two minutes. */ + char *rcv_path; /* Recover file name. */ + char *rcv_mpath; /* Recover mail file name. */ + int rcv_fd; /* Locked mail file descriptor. */ + +#define F_FIRSTMODIFY 0x001 /* File not yet modified. */ +#define F_MODIFIED 0x002 /* File is currently dirty. */ +#define F_MULTILOCK 0x004 /* Multiple processes running, lock. */ +#define F_NOLOG 0x008 /* Logging turned off. */ +#define F_RCV_ALRM 0x010 /* File needs to be synced. */ +#define F_RCV_NORM 0x020 /* Don't delete recovery files. */ +#define F_RCV_ON 0x040 /* Recovery is possible. */ +#define F_UNDO 0x080 /* No change since last undo. */ + u_int flags; +}; + +/* Flags to file_write(). */ +#define FS_ALL 0x01 /* Write the entire file. */ +#define FS_APPEND 0x02 /* Append to the file. */ +#define FS_FORCE 0x04 /* Force is set. */ +#define FS_POSSIBLE 0x08 /* Force could be set. */ + +#define GETLINE_ERR(sp, lno) { \ + msgq((sp), M_ERR, \ + "Error: %s/%d: unable to retrieve line %u.", \ + tail(__FILE__), __LINE__, (lno)); \ +} + +/* FREF routines. */ +FREF *file_add __P((SCR *, FREF *, CHAR_T *, int)); +FREF *file_first __P((SCR *)); +FREF *file_next __P((SCR *, FREF *)); +FREF *file_prev __P((SCR *, FREF *)); +FREF *file_unedited __P((SCR *)); + +/* EXF routines. */ +int file_end __P((SCR *, EXF *, int)); +int file_init __P((SCR *, FREF *, char *, int)); +int file_write __P((SCR *, EXF *, MARK *, MARK *, char *, int)); + +/* Recovery routines. */ +void rcv_hup __P((void)); +int rcv_init __P((SCR *, EXF *)); +int rcv_list __P((SCR *)); +int rcv_read __P((SCR *, char *)); +int rcv_sync __P((SCR *, EXF *)); +void rcv_term __P((void)); +int rcv_tmp __P((SCR *, EXF *, char *)); + +/* DB interface routines */ +int file_aline __P((SCR *, EXF *, int, recno_t, char *, size_t)); +int file_dline __P((SCR *, EXF *, recno_t)); +char *file_gline __P((SCR *, EXF *, recno_t, size_t *)); +int file_iline __P((SCR *, EXF *, recno_t, char *, size_t)); +int file_lline __P((SCR *, EXF *, recno_t *)); +char *file_rline __P((SCR *, EXF *, recno_t, size_t *)); +int file_sline __P((SCR *, EXF *, recno_t, char *, size_t)); |